dsh-gitops: GitOps Workflow Plugin

The dsh-gitops plugin for DSH Harness (DSH) is designed to address declarative infrastructure management, version control, and delivery process standardization through GitOps workflows. Built on Git as the source of truth, it provides declarative infrastructure management, continuous reconciliation, and progressive delivery capabilities. No official installation command is currently available; it must be installed locally via the community catalog or GitHub source code. The plugin runs with the permissions of the current DSH process, so system operations should be performed with attention to permission restrictions and licensing considerations.